Much of this mission is nothing but using Ophion Angel Lift and Ophion Demon Pull. The first few Angel Lifts will be done along side cut scenes, just after Mundus smashes the building you are standing on. Next, you'll need to jump onto Mundu's hand and use a few Angel Lifts until you come to one Demon Pull.

When you have the ability to actually walk, use the Demon Pull any time you see a red ring. Smash the red crystal with Eryx, and smash the red door with Arbiter. Another cut scene will play where you need to use the Angel Lift ability before Mundus' flamethrower reaches you. Now the real battle begins.

Mundus will start off this battle with his fists. In fact, the two health meters on the bottom of the screen represent the health of his arms. The top meter is his left arm, and the bottom meter is his right arm. It's best to focus on one at a time. Dodge the fist smash attacks by jumping into the air and away from both the fists and shockwaves they create, then attack a fist until he removes it.

Another attack in Mundus' arsenal is firing a big, orange orb from his fist. If you see this, use the Evade ability! The orb will lock on, but using Evade will completely negate the damage, even if it looks as though it hits.

After awhile, Mundus will cover the area with fire. Use the Angel Lift ability to jump over to the next building on the right. This is similar to the Succubus battle.

Dodge the same attacks as earlier, and prepare for a fury attack with his fists. The fury attack is just another fist smash, but this time it will be much quicker, and there won't be much of a shockwave from it.

Once one arm is taken out, Mundus' eye will have a red ring. Use the Demon Pull ability to pull Vergil and Mundus out for a few seconds. Next, take out his other arm and do the same Demon Pull on his other eye.

The final step is to attack Mundus' face. His only attacks will be those orange orbs from earlier, but this time there will be many of them. Remember to use the Evade ability. When Mundus comes up close, start slashing and shooting. Emptying this third health gauge will complete the mission.